How can I read/write individual bits from/to CAN when using Channel API functions?

[zelba]

I want to read several CAN channels and write to a CAN channel by using NI-CAN Channel API functions. Some channels consist of one byte of 8 bit length, where every individual bit represents a status bit that has to be read or set (i.e. 1000 0000 or 0100 0000 ...). How can I specify the individual bits?

[PaulFS]

Hello Zelba, cannot specify individual bits in that way since the data type of the channel API is DBL.They only way would be to specify a own channel for every bit.RegardsPaul

[zelba]

Thank you, Paul. I feared that this might be the answer....

[DirkW]

Well the trick is to just crate or have in your case a unsigned 8 bit channel. You can then use a 8 bit unsigned integer datatype to write your bit pattern. See the attached VI. If you are using a C language it should be even easier.
DirkW


Single Sample Event Output_byte.vi:
http://forums.ni.com/attachments/ni/30/3686/1/Single Sample Event Output_byte.vi